Transient Working Group

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Introduction

The Transient Science Group focuses on the analysis of detection, spectra, and time variability of transient sources such as GRBs.

Current Coordinators:

• Monica Seglar-Arroyo (Lead), IFAE, Spain, mseglar@ifae.es
• Irene Burelli (Deputy), irene.burelli@gmail.com

Past Coordinators:

Alice Donini, INAF OAR, Italy, alice.donini@inaf.it (lead convener in 2023)

• Armand Fiasson, LAPP, France, armand.fiasson@lapp.in2p3.fr (lead convener in 2022)

Mailing list and slack channels

Join our mailing list following these instructions: go the outlook webapp https://outlook.office.com/mail/ login with your <firstname>.<lastname>@cta-consortium.org account. Then, in the tab where there is the inbox, etc, scroll down to groups. There you can manage the mailing list to which you are subscribed. 

We have several channel in the CTA North Slack Workspace:

• #lst1-alert-followup to discuss the received alerts or any interesting event

• #lst1-transient-analysis to discuss the analysis of the observed events

Main topics

• Gamma-Ray Bursts (GRBs)
• Gravitational Waves (GWs)
• Neutrino Observations
• Soft Gamma Repeaters

Proposals

2024:

• TRAN01: Spotting the GRB counterpart to gravitational wave detections during the second half of O4 (PI: Monica Seglar-Arroyo)
  
• TRAN02: Gamma-ray bursts observations (PI: Edna Ruiz-Velasco)
  
• TRAN03: Follow-up Observations of Fast Radio Bursts (PI: Alessandro Carosi)
  
• TRAN04: Neutrino ToO (NToO) Observations (PI: Koji Noda)
  

2023:

• TRAN01: Follow-up of gravitational wave events
  
• TRAN02: Gamma-ray burst observations
  
• TRAN03: Tick-Tock: Monitoring of an inspiraling binary SMBH
  

Papers in progress:

• GRB221009A - Link to analysis page

Meetings

Transient Calls 2024

Transient Calls 2023

Transient Calls 2022

17/12/2021 General Meeting

30/06/2021 General Meeting

Documentation

• On Call Expert Webpage

• On Call Expert Schedule

• LST-1 Alert System webpage

• GRB Follow-up criteria summary and logbook

• Expert On Call guideline

• Transient Logbook

• LST-1 Transient Handler Technical Document

• Draft for an Atel or GCN for a transient detection

Useful Tools

• Coordinate converter http://heasarc.gsfc.nasa.gov/cgi-bin/Tools/convcoord/convcoord.pl
• Distance converter http://www.convertworld.com/en/length/Parsec.html
• Energy/frequency/wavelength converter http://heasarc.gsfc.nasa.gov/cgi-bin/Tools/energyconv/energyConv.pl
• A Date/Time Conversion Utility http://heasarc.gsfc.nasa.gov/cgi-bin/Tools/xTime/xTime.pl
• Flux/count rate converter http://heasarc.gsfc.nasa.gov/Tools/w3pimms.html
• Catalog of TeV source http://tevcat.uchicago.edu/
• Publication of HESS, MAGIC and VERITAS
• To calculate source observability (you may have to introduce LST-1 coordinates 28.76195, -17.89005) http://www.magic.iac.es/scheduler/ or https://www.mpi-hd.mpg.de/hfm/HESS/public/Visibility.html